{"abstract":"In response to a request from Varnum LLP (Varnum), NHTSA is announcing a 30-day extension of the public comment period for the notice of proposed rulemaking (NPRM) published on June 26, 2026 proposing to amend Federal Motor Vehicle Safety Standard (FMVSS) No. 135, \"Light vehicle brake systems.\" The proposed modifications would distinguish how regulations apply to vehicles with and without manually operated driving controls. The comment period for the NPRM was originally scheduled to end on July 27, 2026. It will now end on August 26, 2026.","action":"Extension of comment period.","agencies":[{"raw_name":"DEPARTMENT OF TRANSPORTATION","name":"Transportation Department","id":492,"url":"https://www.federalregister.gov/agencies/transportation-department","json_url":"https://www.federalregister.gov/api/v1/agencies/492","parent_id":null,"slug":"transportation-department"},{"raw_name":"National Highway Traffic Safety Administration","name":"National Highway Traffic Safety Administration","id":345,"url":"https://www.federalregister.gov/agencies/national-highway-traffic-safety-administration","json_url":"https://www.federalregister.gov/api/v1/agencies/345","parent_id":492,"slug":"national-highway-traffic-safety-administration"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2026/07/28/2026-15231.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"571","title":49}],"citation":"91 FR 47193","comment_url":null,"comments_close_on":"2026-08-26","correction_of":null,"corrections":[],"dates":"The comment period for the NPRM published at 91 FR 38593 on June 26, 2026, is extended to August 26, 2026.","disposition_notes":null,"docket_ids":["Docket No. NHTSA-2026-0728"],"dockets":[{"supporting_documents":[{"title":"U.S. DOT/NHTSA - Memorandum of Docket Submission of \"FMVSS 135 Markup\"","document_id":"NHTSA-2026-0728-0009"}],"agency_name":"NHTSA","documents":[{"comment_count":16,"comment_start_date":"2026-07-28","updated_at":"2026-08-27T01:56:25.918-04:00","comment_url":"https://www.regulations.gov/commenton/NHTSA-2026-0728-0060","allow_late_comments":false,"id":"NHTSA-2026-0728-0060","comment_end_date":"2026-08-27","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":1,"id":"NHTSA-2026-0728","title":"Modernization of FMVSS No. 135 to Accommodate ADS-Equipped Vehicles"}],"document_number":"2026-15231","effective_on":"2026-06-26","end_page":47193,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/07/28/2026-15231.xml","html_url":"https://www.federalregister.gov/documents/2026/07/28/2026-15231/federal-motor-vehicle-safety-standards-modernization-of-fmvss-no-135-to-accommodate-ads-equipped","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-15231?publication_date=2026-07-28","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-07-28/2026-15231/mods.xml","not_received_for_publication":null,"page_length":1,"page_views":{"count":442,"last_updated":"2026-08-30 08:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-07-28/pdf/2026-15231.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-15231.pdf?1785156321","publication_date":"2026-07-28","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/07/28/2026-15231.txt","regulation_id_number_info":{"2127-AN00":null},"regulation_id_numbers":["2127-AN00"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"U.S. DOT/NHTSA - Memorandum of Docket Submission of \"FMVSS 135 Markup\"","document_id":"NHTSA-2026-0728-0009"}],"comments_count":16,"agency_id":"NHTSA","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=NHTSA-2026-0728","supporting_documents_count":1,"docket_id":"NHTSA-2026-0728","document_id":"NHTSA-2026-0728-0060","regulation_id_number":"2127-AN00","title":"Modernization of FMVSS No. 135 to Accommodate ADS-Equipped Vehicles","checked_regulationsdotgov_at":"2026-08-28T08:55:03Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":47193,"subtype":null,"title":"Federal Motor Vehicle Safety Standards; Modernization of FMVSS No. 135 To Accommodate ADS-Equipped Vehicles; Extension of Comment Period","toc_doc":"Modernization of FMVSS No. 135 To Accommodate ADS-Equipped Vehicles","toc_subject":"Federal Motor Vehicle Safety Standards","topics":[],"type":"Proposed Rule","volume":91}